Sewage Treatment System

XERODROP

ByAeolus Sustainable Bio-Energy Pvt

Ltd,

Sewage Treatment- Present ApproachBiological treatment for sewage

Bio-Methanation

Bio-Composting of solid sludgeHowever

These approaches are not sufficiently effective

Statutory requirements are not fully complied

Limitations of Conventional Microbial Treatments for STP

▼ Dependency on “mood” of microorganisms▼ Large land requirement▼ Inconsistency of results due to multiple factors▼ High maintenance costs▼ Depletes atmospheric oxygen, generates green house

gases▼ Spreads pungent smell, large quantity of solid sludge▼ Most of the plants are not scalable

Sewage Treatment – The Novel Approach

Aeolus now presents

XERODROP

The modern approach

Based on

One Century old Faraday’s Laws

XERODROP - Introduction

XERODROP- Advantages

Effective removal of pollutantsAlways dependable>90% water recovery for recyclingNo smell, no noise, compact sizeNo chemical additionSimplicity in operations, Low O & M CostLow solid sludge generationRecovery of valuable soil nutrients from solid

sludge – revenue generation

XERODROP – Un-comparable advantages

XERODROP – Results Pilot scale

Parameter Typical DSW XERODROP Treated

DSW

CPCB Norms

Colour Dark Brown Colorless Acceptable

pH 4.0 – 4.2 5.9 – 6.9 Acceptable

COD 140000 - 160000 0-500 <99% load reduction

BOD 60000 -70000 0-30 <99% load

reduction

Total Solids TSS 160000 - 210000 >100 Acceptable

Total volatile solids

80000 - 90000 >20 Acceptable

Conductivity Not measurable 89.92 mmhos Acceptable

Distillery Spent Wash Effluent-The Challenge

• Distilleries fermenting sugar cane molasses generate 8 - 15 liters of waste water per liter of ethanol produced.

• The Distillery spent wash (DSW) is characterized by being:Highly acidic Very High BOD and COD High recalcitrant organics with dark colour and severe

pungent smell.High concentration of recalcitrant COD persists even

after both anaerobic and aerobic treatments.Melanoidins and Polyphenolic complexes formed

during fermentation is not easily decomposed by any conventional treatment

XERODROP – Pilot Plant

Xerodrop Distillery spent wash results

XERODROP Process Block Diagram

Effluent AFrom various collection

points

Effluent BFrom various collection

points

Screening

Equalization tank

XERODROP Reactor -1

Clarifier

XERODROP Reactor -2

Settling tank

Activated carbon filter

Pressure sand filter

Treated effluent

Solid Sludg

e

Xerodrop – Concept

XERODROP - PROCESS

Primary Treatment Screening Collection and Equalization Tank

Secondary Treatment Electro-chemical process 3 stages in

reactors Settling

Tertiary Treatment Sand filtration Activated Carbon adsorption Reverse Osmosis (optional)

XERODROP ResultsB

efo

re

Treatm

en

t

Aft

er

Sta

ge 1

Treatm

en

t

Aft

er

Fin

al

Treatm

en

t

XERODROP Plant Layout

Xerodrop Infrastructurefor drinking water from sewage

• Sewage can be converted to drinking water if appropriate infrastructure is created

• Singapore recycles sewage to drinking water

• Stringent quality assurance is required

Sewage to drinking water concept

Electro-chlorination

IS standard NABL accreditedQuality Control

Laboratory

XERODROP – Way forward

• XERODROP Technology is tested on various industrial effluents including power plants, fertilizers, pharmaceuticals, service stations, textile, dairy, Municipal STP, and many more

• Controlled treat ability test on a Pilot plant is advisable for all specific industrial effluents.

• Pilot plant of Xerodrop is available for technology demonstration at nominal charge.